This through plate girder bridge carries a former Northern Pacific Railway mainline over Dale Street on the west side of St. Paul

St. Paul, Ramsey County, Minnesota

Owner: BNSF Railway

Status: Open to Traffic

Built 1936

by

Unknown and Widell Company of Mankato, Minnesota

for

Northern Pacific Railway and Minnesota Highway Department

Design:
84' skewed through plate girder

Description:
Through plate girder bridge over Dale Street

Significance:

This Warren through truss bridge is the northern BNSF crossing of the Mississippi River in Minneapolis

Downtown, Minneapolis, Hennepin County, Minnesota

Owner: BNSF Railway

Status: In Use

Built 1927 and 1963

by

McClintic-Marshall Corportation of Pittsburgh, Pennsylvania and Unknown

for

Northern Pacific Railway

Design:
190' Warren through truss, 2-105', 5-80' deck plate girder

Description:
Warren through truss bridge over Mississippi River

Significance:

This deck plate girder bridge once carried the Minneapolis & St. Louis Railway across the Minnesota River at Carver

Carver, Carver County, Minnesota to Merriam Junction, Scott, Minnesota

Owner: Union Pacific Railroad

Status: Removed

Built 1917

by

American Bridge Company of New York and Widell Company of Mankato, Minnesota

for

Minneapolis & St. Louis Railway

Design:
2-73' and 4-68' deck plate girder and timber pile trestle

Description:
Lost deck plate girder bridge over Minnesota River

Significance:

This stone arch bridge carries the former Chicago & North Western Railway over 6th Street in New Ulm

New Ulm, Brown County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: Open to Traffic

Built 1909

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
24' stone arch

Description:
Stone arch bridge over 6th Street North

Significance:

This steel stringer bridge once carried the Chicago & North Western Railway over Broadway Street in New Ulm

New Ulm, Brown County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: Open to Traffic

Built 1909

by

American Bridge Company of New York and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
28' steel stringer

Description:
Steel stringer bridge over sidewalk (former Broadway Street)

Significance:

This concrete encased beam bridge carries the former Dakota, Minnesota & Eastern Railroad over an unnamed drainage ditch near Judson

Judson, Blue Earth County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: Open to Traffic

Built 1908

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
16' concrete encased beam

Description:
Concrete encased beam bridge over drainage ditch

Significance:

This large concrete arch bridge crosses an unnamed creek parallel to US Highway 14 east of Eagle Lake

Eagle Lake, Blue Earth County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: In Use

Built 1915

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
16' concrete arch

Description:
Concrete arch bridge over unnamed creek

Significance:

This through plate girder bridge is the ninth crossing of Garvin Brook along the former Chicago & North Western Railway

Stockton, Winona County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: In Use

Built 1909 and 1919

by

American Bridge Company of New York (Lassig Plant) and Unknown

for

Chicago & North Western Railway

Design:
84' through plate girder and 2-23' steel stringer

Description:
Through plate girder bridge over Garvin Brook

Significance:

This deck plate girder bridge carries the former Chicago & North Western Railway over the Lake Elysian Outlet west of Janesville

Janesville, Waseca County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: In Use

Built 1908

by

American Bridge Company of New York and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
40' deck plate girder

Description:
Deck plate girder bridge over Lake Elysian Outlet

Significance:

This through plate girder bridge carries the former Chicago & North Western Railway over Riverside Avenue in Owatonna

Owatonna, Steele County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: Open to Traffic

Built 1901

by

King Bridge Company of Cleveland, Ohio and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
33' through plate girder

Description:
Through plate girder bridge over Riverside Avenue

Significance:

This deck plate girder bridge carries the former Chicago & North Western Railway over School Street on the east side of Owatonna

Owatonna, Steele County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: In Use

Built 1908

by

American Bridge Company of New York (Lassig Plant) and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
50' deck plate girder

Description:
Deck plate girder bridge over School Street

Significance:

This through and deck plate girder bridge carries a former Chicago & North Western Railway mainline over East Indian Creek and Union Pacific Railroad (Former Chicago, Rock Island & Pacific Railway) east of Nevada

Nevada, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900 and 1902

by

American Bridge Company of New York; Widell Company of Mankato, Minnesota and Unknown

for

Chicago & North Western Railway

Design:
68' deck plate girder and 68' through plate girder

Description:
Through and deck plate girder bridge over East Indian Creek and Union Pacific Railroad (Former Chicago, Rock Island & Pacific Railway)

Significance:

This small steel stringer bridge once carried the former Chicago & North Western Railway over a driveway on the west side of Waseca

Waseca, Waseca County, Minnesota

Owner: Dakota, Minnesota & Eastern Railroad (Final Owner)

Status: Replaced by a new bridge

Built 1908

by

American Bridge Company of New York and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
18' steel stringer

Description:
Lost steel stringer bridge over driveway

Significance:

This deck plate girder once carried the former Chicago & North Western Railway over Oak Avenue in Owatonna

Owatonna, Steele County, Minnesota

Owner: Dakota, Minnesota & Eastern Railroad (Final Owner)

Status: Replaced by a new bridge

Built 1894

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
33' deck plate girder

Description:
Lost deck plate girder bridge over Oak Avenue

Significance:

This through plate girder bridge is the eastern bridge carrying a former Minneapolis & St. Louis Railway line over Soldier Creek in Fort Dodge

Fort Dodge, Webster County, Iowa

Owner: City of Fort Dodge

Status: Open to Pedestrian Traffic

Built 1909

by

Minneapolis Steel & Machinery Company of Minneapolis, Minnesota and Widell Company of Mankato, Minnesota

for

Minneapolis & St. Louis Railway

Design:
74' through plate girder

Description:
Through plate girder bridge over Soldier Creek

Significance:

This through plate girder bridge is the middle bridge carrying a former Minneapolis & St. Louis Railway line over Soldier Creek in Fort Dodge

Fort Dodge, Webster County, Iowa

Owner: City of Fort Dodge

Status: Open to Pedestrian Traffic

Built 1909

by

Minneapolis Steel & Machinery Company of Minneapolis, Minnesota and Widell Company of Mankato, Minnesota

for

Minneapolis & St. Louis Railway

Design:
74' through plate girder

Description:
Through plate girder bridge over Soldier Creek

Significance:

This through plate girder bridge is the western bridge carrying a former Minneapolis & St. Louis Railway line over Soldier Creek in Fort Dodge

Fort Dodge, Webster County, Iowa

Owner: City of Fort Dodge

Status: Open to Pedestrian Traffic

Built 1909

by

Minneapolis Steel & Machinery Company of Minneapolis, Minnesota and Widell Company of Mankato, Minnesota

for

Minneapolis & St. Louis Railway

Design:
74' through plate girder

Description:
Through plate girder bridge over Soldier Creek

Significance:

This small stone arch culvert carries a former Chicago & North Western Railway mainline over a sidewalk on the north side of the Iowa State University campus

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1901

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
8' stone arch culvert

Description:
Stone arch culvert over sidewalk

Significance:

This historic double intersection Warren pony truss bridge carries J Avenue over a former Chicago & North Western Railway mainline east of Ogden

Ogden, Boone County, Iowa

Owner: Union Pacific Railroad

Status: Open to Automobile Traffic

Built 1900 using a span fabricated c. 1882

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
75' double intersection Warren pony truss and timber pile trestle

Description:
Double intersection Warren pony truss bridge over Union Pacific Railroad

Significance:

This iconic Baltimore deck truss and deck plate girder viaduct carries a former Chicago & North Western Railway mainline over the Des Moines River between Boone and Ogden

Boone, Boone County, Iowa to Ogden, Boone County, Iowa

Owner: Union Pacific Railroad

Status: Bypassed and Closed To Traffic

Built 1899-1901

by

American Bridge Company of New York (Various Shops); Widell Company of Mankato, Minnesota and Engineering Contract Company of New York

for

Chicago & North Western Railway

Design:
300' Baltimore deck truss and 21-75' and 18-45' deck plate girders

Description:
Baltimore deck truss and deck plate girder viaduct over Des Moines River and Juneberry Road

Significance:

This historic double intersection Warren pony truss bridge carries L Avenue over a former Chicago & North Western Railway mainline west of Boone

Boone, Boone County, Iowa

Owner: Union Pacific Railroad

Status: Open to Automobile Traffic

Built 1900 using a span fabricated 1882

by

Alden and Lassig Bridge & Iron Works of Chicago, Illinois

for

Chicago & North Western Railway

Design:
49' double intersection Warren pony truss and timber pile trestle

Description:
Double intersection Warren pony truss bridge over Union Pacific Railroad

Significance:

This through plate girder bridge carries the former Chicago & North Western Railway over the former Chicago, Rock Island & Pacific Railway in Owatonna

Owatonna, Steele County, Minnesota

Owner: Canadian Pacific Kansas City Limited

Status: Open to Traffic

Built 1901

by

King Bridge Company of Cleveland, Ohio and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
45' through plate girder

Description:
Through plate girder bridge over Union Pacific Railroad

Significance:

This small stone arch culvert crosses an unnamed drainage ditch near Verdi

Lake Benton, Lincoln County, Minnesota

Owner: Rapid City, Pierre & Eastern Railroad

Status: In Use

Built 1908

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
8' stone arch culvert

Description:
Stone arch culvert over unnamed drainage ditch

Significance:

This through truss vertical lift bridge crosses the Mississippi River alongside Robert Street

St. Paul, Ramsey County, Minnesota

Owner: Union Pacific Railroad

Status: In Use

Built 1912

by

American Bridge Company of New York and Widell Company of Mankato, Minnesota

for

Chicago Great Western Railway

Design:
192' Pratt through truss lift span and 8-79' deck plate girders

Description:
Vertical lift bridge over Mississippi River

Significance:

This deck plate girder bridge carries a former Chicago & North Western Railway mainline over 6th Street in Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
60' deck plate girder

Description:
Deck plate girder bridge over 6th Street

Significance:

This deck plate girder bridge carries a former Chicago & North Western Railway mainline across Beaver Creek at Beaver

Beaver, Boone County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1901

by

American Bridge Company of New York (Lassig Plant) and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
2-68' deck plate girders

Description:
Deck plate girder bridge over Beaver Creek

Significance:

This small stone arch culvert carried a former Chicago & North Western Railway mainline over an unnamed creek near US Highway 65 in Colo

Colo, Story County, Iowa

Owner: Union Pacific Railroad

Status: Filled In

Built 1890 and 1900

by

Morris & Foley of St. Paul, Minnesota and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
10' stone arch culvert

Description:
Stone arch culvert over unnamed creek

Significance:

This stone arch culvert carries a former Chicago & North Western Railway line over an unnamed ditch on the west side of Nevada

Nevada, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1891 and 1900

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
10' stone arch culvert

Description:
Stone arch culvert over unnamed ditch

Significance:

This deck plate girder bridge carries the former Chicago, St. Paul, Minneapolis & Omaha Railway (Omaha Road) mainline over an unnamed creek alongside Iowa Highway 60 north of Hospers

Hospers, Sioux County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1912

by

American Bridge Company of New York and Widell Company of St. Paul, Minnesota

for

Chicago, St. Paul, Minneapolis & Omaha Railway

Design:
30' deck plate girder

Description:
Deck plate girder bridge over unnamed creek

Significance:

This small steel stringer bridge carries the former Chicago, St. Paul, Minneapolis & Omaha Railway (Omaha Road) mainline over an unnamed creek alongside Iowa Highway 60 north of Seney

Seney, Plymouth County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1916 using stringers fabricated c. 1900

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago, St. Paul, Minneapolis & Omaha Railway

Design:
25' steel stringer

Description:
Steel stringer bridge over unnamed creek

Significance:

This small steel stringer bridge carries the former Chicago, St. Paul, Minneapolis & Omaha Railway (Omaha Road) mainline over an unnamed creek alongside Iowa Highway 60 north of Seney

Seney, Plymouth County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1911

by

Minneapolis Steel & Machinery Company of Minneapolis, Minnesota and Widell Company of Mankato, Minnesota

for

Chicago, St. Paul, Minneapolis & Omaha Railway

Design:
20' steel stringer

Description:
Steel stringer bridge over unnamed creek

Significance:

This small steel stringer bridge carries the former Chicago, St. Paul, Minneapolis & Omaha Railway (Omaha Road) mainline over an unnamed creek alongside Iowa Highway 60 north of Seney

Seney, Plymouth County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1911

by

Minneapolis Steel & Machinery Company of Minneapolis, Minnesota and Widell Company of Mankato, Minnesota

for

Chicago, St. Paul, Minneapolis & Omaha Railway

Design:
20' steel stringer

Description:
Steel stringer bridge over unnamed creek

Significance:

This stone arch bridge carries a former Chicago & North Western Railway mainline over Clear Creek on the northwest side of the Iowa State University campus in Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1882 and 1901

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
16' stone arch

Description:
Stone arch bridge over Clear Creek

Significance:

This steel stringer bridge carries a former Chicago & North Western Railway mainline over County Road R38 (500th Avenue/Y Avenue) on the west edge of Ames

Ames, Story County, Iowa to Jordan, Boone County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1941

by

Des Moines Steel Company of Des Moines, Iowa; Widell Company of Mankato, Minnesota and Unknown

for

Chicago & North Western Railway

Design:
45' steel stringer

Description:
Steel stringer bridge over County Road R38 (500th Avenue/Y Avenue)

Significance:

This large stone and concrete arch bridge carries the former Chicago & North Western Railway over the East Branch DuPage River near Glen Ellyn

Glen Ellyn, DuPage County, Illinois

Owner: Union Pacific Railroad

Status: In Use

Built 1905 and 1923

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
2-32' stone and concrete arch

Description:
Stone arch bridge over East Branch DuPage River

Significance:

This stone arch bridge carries a former Chicago & North Western Railway mainline over East Beaver Creek on the west side of Ogden

Ogden, Boone County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
20' stone arch

Description:
Stone arch bridge over East Beaver Creek

Significance:

This concrete encased beam bridge carries a former Chicago & North Western Railway mainline over Haber Road on the north side of the Iowa State University campus in Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1938

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
18' concrete encased beam

Description:
Concrete encased beam bridge over Haber Road

Significance:

This quadrangular lattice through truss bridge was rebuilt and moved from another location to carry the former Chicago & North Western Railway over Illinois Route 29 south of Pekin

Pekin, Tazewell County, Illinois

Owner: Union Pacific Railroad

Status: In Use

Built c. 1940 using a span fabricated c. 1905

by

Unknown

for

Chicago & North Western Railway

Design:
170' quadrangular lattice through truss

Description:
Quadrangular lattice through truss bridge over Illinois Route 29

Significance:

This deck plate girder bridge carries a former Chicago & North Western Railway mainline over Ioway Creek alongside 6th Street in Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900; rebuilt c. 1960 using spans fabricated 1898

by

Wisconsin Bridge & Iron Company of North Milwaukee, Wisconsin and Lassig Bridge & Iron Works of Chicago, Illinois

for

Chicago & North Western Railway

Design:
3-75' deck plate girders

Description:
Deck plate girder bridge over Ioway Creek

Significance:

This deck plate girder bridge carries a former Chicago & North Western Railway mainline across Little Beaver Creek along US Highway 30 between Beaver and Grand Junction

Grand Junction, Greene County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1901

by

American Bridge Company of New York (Lassig Plant) and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
68' deck plate girder

Description:
Deck plate girder bridge over Little Beaver Creek

Significance:

This stone arch bridge carries a former Chicago & North Western Railway mainline over Polecat Creek west of Boone

Boone, Boone County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1899

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
12' stone arch

Description:
Stone arch bridge over Polecat Creek

Significance:

This stone arch bridge carries a former Chicago & North Western Railway mainline over Richards Creek on the east side of Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
15' stone arch

Description:
Stone arch bridge over Richards Creek

Significance:

This large deck truss and deck plate girder bridge carries the former Chicago & North Western Railway mainline over the Sheboygan River, New Jersey Avenue and 17th Street in Sheboygan

Sheboygan, Sheboygan County, Wisconsin

Owner: Union Pacific Railroad

Status: In Use

Built 1906 and c. 1930

by

Pennsylvania Steel Company of Steelton, Pennsylvania; Widell Company of Mankato, Minnesota and Unknown

for

Chicago & North Western Railway

Design:
2-161' double intersection Warren deck trusses, 1-80', 1-76', 1-70', 1-65' and 2-40' deck plate girders

Description:
Double intersection Warren deck truss bridge over Sheboygan River, New Jersey Avenue and 17th Street

Significance:

This stone arch bridge carries a former Chicago & North Western Railway mainline over an unnamed tributary of South Onion Creek near Jordan

Jordan, Boone County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1899

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
15' stone arch

Description:
Stone arch bridge over tributary of South Onion Creek

Significance:

This large deck plate girder bridge carries a former Chicago & North Western Railway mainline over the South Skunk River on the east side of Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900 and 1949

by

Wisconsin Bridge & Iron Company of North Milwaukee, Wisconsin; American Bridge Company of New York and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
1-110', 1-75' deck plate girder and 1-20' and 1-18' steel stringers

Description:
Deck plate girder bridge over South Skunk River

Significance:

This small stone arch culvert carries a former Chicago & North Western Railway mainline over an unnamed tributary of Buttrick Creek west of Grand Junction

Grand Junction, Greene County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1898 and 1900

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
10' stone arch culvert

Description:
Stone arch culvert over unnamed tributary of Buttrick Creek

Significance:

This large stone arch bridge carries the former Chicago & North Western Railway over the West Branch DuPage River in Winfield

Winfield, DuPage County, Illinois

Owner: Union Pacific Railroad

Status: In Use

Built 1863, 1895 and 1905

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
2-32' stone arch

Description:
Stone arch bridge over West Branch DuPage River

Significance:

This through plate girder bridge carried a former Chicago & North Western Railway mainline across West Beaver Creek along US Highway 30 on the east side of Grand Junction

Grand Junction, Greene County, Iowa

Owner: Union Pacific Railroad

Status: Replaced by a new bridge

Built 1901

by

King Bridge Company of Cleveland, Ohio and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
80' through plate girder

Description:
Through plate girder bridge over West Beaver Creek

Significance:

This massive stone arch bridge carries a former Chicago & North Western Railway mainline over West Indian Creek on the west side of Nevada

Nevada, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1890 and 1900

by

Morris & Foley of St. Paul, Minnesota and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
40' stone arch

Description:
Stone arch bridge over West Indian Creek

Significance:

This through plate girder bridge carries the former Chicago, St. Paul, Minneapolis & Omaha Railway (Omaha Road) mainline over Wolf Creek alongside Iowa Highway 60 north of Le Mars

Le Mars, Plymouth County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1911

by

Minneapolis Steel & Machinery Company of Minneapolis, Minnesota and Widell Company of Mankato, Minnesota

for

Chicago, St. Paul, Minneapolis & Omaha Railway

Design:
60' through plate girder

Description:
Through plate girder bridge over Wolf Creek

Significance:

This steel stringer bridge carries a former Chicago & North Western Railway mainline over X Avenue between Jordan and Ames

Jordan, Boone County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1941

by

American Bridge Company of New York; Widell Company of Mankato, Minnesota and Unknown

for

Chicago & North Western Railway

Design:
45' steel stringer

Description:
Steel stringer bridge over X Avenue

Significance:

This partially removed through truss and deck plate girder bridge once carried the Chicago & North Western Railway over the Mississippi River at Winona

Winona, Winona County, Minnesota to Marshland, Buffalo County, Wisconsin

Owner: City of Winona

Status: Abandoned and Partially Removed

Built 1899, 1929 and 1941

by

Detroit Bridge & Iron Works of Detroit, Michigan; American Bridge Company of New York; Widell Company of Mankato, Minnesota and Unknown

for

Chicago & North Western Railway

Design:
356' Pratt through truss swing span and 33 span deck plate girder

Description:
Partially removed deck plate girder bridge over Mississippi River

Significance: